Control valve



Oct. 2 1923. 1,469,228

c. LEJUNE CONTROL VALVE Filed April 18 1922 INVEWTOR CHARLES LEJEIM,

Patentcd Dct. 2,1923t UMTED srerae eeranr@Mit ommnns LEJ EUNE, on WOLUWE-ST. LA1EBER, NEAR BRUSSELS, enmrnm;ns srenoe TO JULES{LEJEUNE, or BRUSSELS, BELGIUM. 1

7 r CONTROL VALVE;

Application fi1ed April 18, 1922. Serial No. 555,046.

To ZLZZ w7zonrt ma y cocM:

Be 1t known that -I, CHARLES LEJEN E, a sulo ect oi:theKnig ofthe Belgians, res d- -ing at Wolnwe-St. Lambert,;near Brnsseis in the Kingdom of Belgium, have'invented certain new and usefnl improvements,in

Control Valves, of which the following is.a

specification.

Th1s .1nvention relates to a ;control valve espciall v adaptd for use on loeomotives, but WhlCh'llLY-fllSQb8 applied to stationary ,cOmmonly employed-principally in locomo-' tives, present many. diflicnlties chiefi inob- :taining a perfectlv' 'steam tight joint as well V as the impoSsibilityof obtaining gradual opening. example these inconveniences show themselves by sWaving oi the machine, violent starting and the production of serions damage due to the sudden starting followed by very pronounced condensation of the steam in the cylinders.

These inconveniences make slide valve control preferable to ordinary double seat' ed valve control. 7 4

Slide valves also have their own indonveniences amongst which the princpal are the intense swirling of the steam and the imPossibilitv of cutting ofi admission in,

case of a break down of the controls.

The obiect ofthisinvention is to overcome both the inconvenience 0fcontrl valves 'of this tvpe and also of slide valves.

With this oloiect in VieW the, invention essentially consiste in a special 'arrangement of a pluralitv of independent valves as Will be hereinafter fullv describd and pointed out in the appendedchms.

Referring to the accompanying drawing which shows bv"way of example, one form of the invention:

ple ontrol valve for a machine of me-.

dium power. 5 7

Fig. 2 1s a plan v1ew of same.

nlicable for locomotives is placed as 'is usual in the steamclome of the boiler. It* is made up oi:' a circuler casing1 having a lateral extension affixed by a fiange 2 and bolts 3 to the pipe 4 and so tothe machine. In the. upper and of the casing are circular machines. or, to any other type a Sucl1- as for Th valve shown. more:partnlafly ap-7' a sleeve Orcentral guide 8 through -vvhich valve. -,Arms l0 are f0rmedon the upper part of the. rod,9. ,There are. as manyarrns 10 as there are,openings 11, throngh whmh pass the stems 12 of the valves 7.

In the drawin shown the efect1ve lengths lofthe stems 12 of the various valvesare d ifferentand mav be adjusted loy nuts 13, :againgt Which the; arms 10, bear 'when the 51od 9E-is -raisedvertieallyl ;Undei these'conditions;the valve havirg the least; length, of In the caseof-'a locomotive for,

stem betWeen its base14 and the nu ts 13 direction, Whilst the next' valve Will only be litted from its seating when the first has Passcs the rod 9 affi ed at its lower ehdto J the ordinary. Operating rod 01 the control been raised a distance corresponding to the difference i1iylengshs of the stems between the base and the nuts. rangement consists of eight valves, for example, the regnlation may'be such that the first may be raised nine millimetres when the eighth has O nly oeen raised one milli metre. The casingbeing honsed in the steam dome the steam Will penetrate into the anlowered the valves-Will v be, retrned to their seatings and held; the're, withoutthe; possi: bility of any of the valves openirig uninten- In snch Hence if the a1 V nular space 15' as soon as the first valveis an arrangement the valves open r succesmvely 'andit is evident that the pres-L A sure'gto be overcome"to' open them 1s re- Figr. 1 is a sectional elevation of a mnltiduced to that necessary to open a single valve with the eonsequent advantagebf reducing the"mechnical poWer employed and renderingthe operat1onmore s1mple.

The order in whichthe valves open may is adoted, such that two valves placed at the extremities 'of diameteroper1 succes-- sivel in order to obtain the best distribution of the steam.

beregulated at will, nevertheless an order -1051.' 

